Files
pytorch/torch/_thnn/utils.py
Luke Yeager e7c1e6a8e3 [pep8] Fix most lint automatically with autopep8
Here's the command I used to invoke autopep8 (in parallel!):

    git ls-files | grep '\.py$' | xargs -n1 -P`nproc` autopep8 -i

Several rules are ignored in setup.cfg. The goal is to let autopep8
handle everything which it can handle safely, and to disable any rules
which are tricky or controversial to address. We may want to come back
and re-enable some of these rules later, but I'm trying to make this
patch as safe as possible.

Also configures flake8 to match pep8's behavior.

Also configures TravisCI to check the whole project for lint.
2017-01-28 01:15:51 +01:00

113 lines
3.2 KiB
Python

import os
import itertools
import importlib
THNN_H_PATH = os.path.join(os.path.dirname(__file__), '..', 'lib', 'THNN.h')
THCUNN_H_PATH = os.path.join(os.path.dirname(__file__), '..', 'lib', 'THCUNN.h')
def _unpickle_backend(backend_name):
import torch._thnn
return torch._thnn.type2backend[backend_name]
class THNNBackendBase(object):
def __init__(self):
self.methods = {}
def __getattr__(self, name):
method = self.methods.get(name, None)
if method is None:
raise NotImplementedError
return method
def register_method(self, name, ctypes_fn):
self.methods[name] = ctypes_fn
@property
def library_state(self):
return 0
def __reduce__(self):
return (_unpickle_backend, (type(self).__name__,))
class Function(object):
def __init__(self, name):
self.name = name
self.arguments = []
def add_argument(self, arg):
assert isinstance(arg, Argument)
self.arguments.append(arg)
def __repr__(self):
return self.name + '(' + ', '.join(map(lambda a: a.__repr__(), self.arguments)) + ')'
class Argument(object):
def __init__(self, _type, name, is_optional):
self.type = _type
self.name = name
self.is_optional = is_optional
def __repr__(self):
return self.type + ' ' + self.name
def parse_header(path):
with open(path, 'r') as f:
lines = f.read().split('\n')
# Remove empty lines and preprocessor directives
lines = filter(lambda l: l and not l.startswith('#'), lines)
# Remove line comments
lines = map(lambda l: l.partition('//'), lines)
# Select line and comment part
lines = map(lambda l: (l[0].strip(), l[2].strip()), lines)
# Remove trailing special signs
lines = map(lambda l: (l[0].rstrip(');').rstrip(','), l[1]), lines)
# Split arguments
lines = map(lambda l: (l[0].split(','), l[1]), lines)
# Flatten lines
new_lines = []
for l, c in lines:
for split in l:
new_lines.append((split, c))
lines = new_lines
del new_lines
# Remove unnecessary whitespace
lines = map(lambda l: (l[0].strip(), l[1]), lines)
# Remove empty lines
lines = filter(lambda l: l[0], lines)
generic_functions = []
for l, c in lines:
if l.startswith('TH_API void THNN_'):
fn_name = l.lstrip('TH_API void THNN_')
if fn_name[0] == '(' and fn_name[-2] == ')':
fn_name = fn_name[1:-2]
else:
fn_name = fn_name[:-1]
generic_functions.append(Function(fn_name))
elif l:
t, name = l.split()
if '*' in name:
t = t + '*'
name = name[1:]
generic_functions[-1].add_argument(Argument(t, name, '[OPTIONAL]' in c))
return generic_functions
def load_backend(t, lib, generic_functions, mixins=tuple()):
lib_handle = importlib.import_module(lib)
backend_name = 'THNN{}Backend'.format(t)
backend = type(backend_name, mixins + (THNNBackendBase,), {})()
for function in generic_functions:
full_fn_name = '{}{}'.format(t, function.name)
fn = getattr(lib_handle, full_fn_name)
backend.register_method(function.name, fn)
return backend